Coal-handling device.



S. B. PEGK.

GOAL HANDLING DEVIGE.

APPLICATION FILED un 15,1908.

Patented Aug. 30, 1910.

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STAUNTON B. PECK, OF CHICAGO, ILLINOIS.

COAL-HANDLING DEVICE.

Specification of Letters Patent.

Application filed May 15, 1908.

Patented Aug. 30, 1910.

serial No. 432,989.

T o all 'whom tt may concern:

Be it known that I, STAUNTON B. PECK, a citizen of the United States,residing at Chicago, in the county of Cook and State ofIllinois, haveinvented a certain new and useful Improvement in Coal-Handling Devices,of which the following is a specification.

My invention relates to coal handling devices and has for its object toprovide certain new and useful improvements relating to endless chainconveyer bucket systems for coal and the like.

It is illustrated in the accompanying drawings, wherein- Figure l is aside elevation of a series of such buckets with parts broken away; andFig. 2 is a detail cross section on the line 2 2 of Fig. l.

Like parts are indicated by the same letter in all the figures.

A, A are the ends of a bucket, the bottom of which is formed by thecurved piece B. Each bucket is suspended on a short shaft C which issuitably mounted in the endless carrier. On the side of each bucket ispreferably mounted a cam device D of any desired shape. In my systemsuch cam device is used to tilt the bucket for unloading, or for anyother purpose. I also preferably mount my buckets in the extended endsof links which form part of the endless carrier so as to bring about thedisengagement of their overlapping lips as they pass about the corners,but as this is no part of my present invention I do not show it here.Buckets of this class, if the lips are overlapped, present a flat orrounded and relatively extended upper surface. A certain amount ofmaterial as, for example, coal, tends to rest and remain on such lip andto gather upon it. When, therefore, thc lips separate, such coal soresting on the top of the lip is shaken off into the pit below.Moreover, if the buckets are well filled and the upper part of the upperlip is shaped as suggested, the tendency of the coal to gather upon thesame may result in a spill of the coal at the end of such lip andbetween the sides of the bucket. If, on the other hand, these lips aremade to present a sharp edge above or their two faces come together at acomparatively sharp angle, this tendency is entirely avoided. The bucketis under a certain amount of vibration and since there is nothing toinduce the coal or 'ence to each other.

other material to lie on or move about across the top or crest of thelip it tends to move downward on both sides and thus the crest is keptclear and the waste above referred to, or any other waste, is prevented.On the other hand, the buckets must have a certain freedom forlongitudinal movement with reference to one another. This is importantfor several reasons, among others, because of the wearing of the parts,the movement of the buckets with reference to each other as they goaround the corner, their coming together after the lips once beingseparated again approach each other, and the adjustment of the partsafter the bucket has been emptied or dumped. To do this properly thelower side of the lip of the bucket should be flat or free from anglesor recesses so that the edge of the lower lip may have the freedom ofmovement on the bottom of the upper lip. The form I have illustrated isshown in Fig. l where the lower arched surface of the lip covers theupper sharp edge on the lip of the adjacent bucket and rides upon it,but owing to the shape of said surface has a free movement thereupon.

To state the matter in another Way, the configuration of the upper sideof the lip should differ from that of the lower side so that when theupper side of one lip engages with the lower side of the other, thebuckets shall have, while in effective engagement to prevent spillbetween t-he buckets, a certain freedom for longitudinal movement withreference to each other without displacement of the lips. The lipsshould not interlock though they must overlie each other and be inengagement. This feature of my invention could be realized withouthaving the sharpened upper edge of the lip.

The preferred form of the structure comprises the relatively sharp upperedge of the lip, the overhanging outer edge of the lip, and thenon-symmetrical shape of the upper and lower parts of the lip so thatoverlapping lips will shed the material in both directions from thecrest, deliver it into the bucket of the underlying lip below the lineof their engagement, and permit free longitudinal movement of thebuckets with refer- Of course the structure might be modified so as tothrow away some one of these advantages while obtaining the others.

In my drawings I have shown the lower part of the lip as curved, but ofcourse this curve could be broken into plane surfaces. It might eventake the form of a single angle provided it formed a larger angle thanthe angle of the upper surface of the lip, or the upper surface of thelip might be itself somewhat curved or rounded. Vha-t I mean byrelatively smooth therefore is a surface which is distinguished from asurface which is made to ft the opposed or lower surface. Thisexplanation has reference not only to the possibility of longitudinalmotion of the buckets, with reference one to the other, but it also hasreference to the shape of the opposed surfaces of the lips so that theywill easily engage and disengage which is not the case where they aresymmetrical and closely fitting with a sharp angle on each.

I claim:

l. A conveyer bucket comprising a body having a lip at each end whoseupper and lower surfaces are non-symmetrical with reference to eachother, said lip projecting from said bucket and adapted to overhang asimilar lip upon an adjacent bucket the upper surface of said lipcomprising two flat surfaces at an angle one with the other.

2. A conveyer bucket comprising a body and a projecting lip at each endwhose upper and lower surfaces are non-symmetrical with reference toeach other, the upper surface edge.

3. A conveyer bucket comprising a body and a projecting lip at each endwhose upper and lower surfaces are non-symmetrical with reference toeach other, the lower surface presenting a relatively smooth surface.

et. A conveyer bucket comprising a body and a projecting lip at each endwhose upper and lower surfaces are non-symmetrical with reference toeach other, the upper surface presenting an upper relatively sharp edgeand the lower surface presenting a relatively smooth surface.

5. A conveyer bucket comprising a. body and a projecting lip at each endwhose upper and lower surfaces are non-symmetrical with reference toeach other, the lower surface presenting a relatively smooth upwardlyarched surface.

6. A conveyer bucket comprising a body and a projecting lip at each endwhose upper and lower surfaces are non-symmetrical )resentino' an uo errelativel shar l e l j with reference to each other, the upper surfacepresenting an upper relatively sharp edge, the lower surface presentinga relatively smooth upwardly arched surface.

STAUNTON B. PECK.

fitnesses EDWARD T. VVRAY, LUCY A. FALKENBERG.

